Tender For corrigendum : supply of synthetic rubber neoprene or nitrite bonded corkcompositionsheet grade rc - 50/b fine grannals, size: 600 mm x 900 mm x 3.2 mm thick to is: 4253/80 part-ii. the sheet shall be duly stamped by mfr's name , month, year of manufacturing in indeliable ink & suitably packed in transparent polythene bags duly sprinkled with french chalk powder individually.